[jboss-dev-forums] [JBoss AS 7 Development] - Two-phase commit using an XA-datasource

[Bohuslav Jecmen]

Bohuslav Jecmen [https://community.jboss.org/people/jecmenb] created the discussion

"Two-phase commit using an XA-datasource"

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Howdy!
I'd like to ask a question about using an xa-datasource defined within my AS7 instance. 
*What I did:* I defined two different xa-datasources pointing to two databases
*What I need:* I need to implement a two phase commit using those two xa-datasources mentioned above.

Is there any Java sample/example how to use the JBoss transactional mechanism to do what I need? 
As I understood, I can (I have to) use an ordinary DataSource instead of XADataSource in my code, right? How does it work? What is the right way to do following:
1. Create two connections to 2 different DBs (using xa-datasources defined within my AS7)
2. Do some operations over both of them
3. Do a final commit (or rollback if any error)

Last question - what's the role of the JBoss's TransactionManager? How does it work? Is it hidden for the developers or do we need to instantiate it explicitly?

Since I didn't found any sufficient answer I appreciate any explanation and help!

Thanks a lot,
Bobo
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